by Inon Henig (1 Submission)
Category: Math/Dates
Compatability: Visual Basic 3.0
Difficulty: Intermediate
Date Added: Wed 3rd February 2021
Rating: 
(3 Votes)
Converting decimal value to hexadecimal WITHOUT! using the VB functions or mod (which are limited to long data type value), therefore the function can handle BIG numbers, untill 15,000,000,000,000,000 (1.5E+16).
Inputs
decimal value
Code Returns
hexadecimal value
Side Effects
The functions might not be accurate beyond 15,000,000,000,000,000 (1.5E+16).
VBcodersPublic Function BigDecToHex(ByVal DecNum) As String
' This function is 100% accurate untill 15,000,000,000,000,000 (1.5E+16)
Dim NextHexDigit As Double
Dim HexNum As String
HexNum = ""
While DecNum <> 0
NextHexDigit = DecNum - (Int(DecNum / 16) * 16)
If NextHexDigit < 10 Then
HexNum = Chr(Asc(NextHexDigit)) & HexNum
Else
HexNum = Chr(Asc("A") + NextHexDigit - 10) & HexNum
End If
DecNum = Int(DecNum / 16)
Wend
If HexNum = "" Then HexNum = "0"
BigDecToHex = HexNum
End Function
